Service bulletins for the 1994 Chevrolet G-Series
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
28 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Ignition are shown. Show all
| 677153A | 1997-08-21. Service bulletin. ELECTRICAL SYSTEM:IGNITION:MODULE. NO UPSHIFT/2ND GEAR ONLY AFTER COLD START-INTERMITTENT DTC 87 - HIGH RATIO ERROR (REPLACE EPROM). *TW |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.